ES2273309T3 - SOURCE TO BAKE FOOD AND PROCEDURE FOR MANUFACTURING. - Google Patents

Abstract

A baking tin comprises at least one foodstuffs-holding tray (2) having a bottom wall (4), a plurality of consecutive side walls (5, 6, 7, 8, 9) extending away from the bottom wall (4) to define a holding cavity, a plurality of corners (9, 10, 11, 12) each defined by two consecutive side walls, at least one of the corners (9) comprising an undercut (18). The baking tin (1) further comprises a supporting structure (3) having at least one through opening (13) delimited by a plurality of consecutive edges (14, 15, 16, 17) to define a seat for receiving the tray (2) into the supporting structure (3), at least one connecting portion (19) between two consecutive edges of the opening (13) being designed to be engaged by the undercut (18) to secure said tray (2) to the supporting structure (2). <IMAGE>

Description

Food baking dish and procedure for its manufacture.

The present invention relates to a source for baking food comprising at least one tray for food and a support structure that houses one or more trays. In particular, the tray comprises a bottom wall from which extends a plurality of consecutive side walls, which, in conjunction with the back wall, they define the cavity of containment. The support structure comprises at least one passage opening, which is delimited by a plurality of edges Consecutive and defining the space to accommodate the tray. A device of this nature is already known through the patent DE-4-20304058.

The present invention also relates to a method for manufacturing said baking dish foods.

The invention in particular relates to sources used in the preparation of sweets, cakes or products Ready made for consumption.

Indeed, these types of sources allow eliminate the costs of cleaning the fountains after use and that the waste material is easily recycled; They are particularly useful in cases where the reuse of the source.

In the current technique there are sources for oven in which the trays can be placed in the support structure through appropriate connection means. In particular, the sources in the known technique they are substantially shaped parallelepiped, defined by the four side walls and by a background wall. Two opposite side walls comprise respective fins that are folded over the outer surface of the other two side walls, defining the head walls of the fountain. In other words, there are two fins on the surface exterior of the two head walls, said fins overlap partially in the head wall. Each of the two appendices extends from an edge of the head wall towards the center from it, being separated from each other by a distance default, so each one has free borders opposites A cavity or hole is formed in one of said edges, of such that said cavity is opposite and aligned with the cavity that forms on the free edge of the other fin.

The conjunction of the two cavities defines a space to accommodate a tongue that forms in the structure of support for.

This tongue extends overhang towards the inside an opening formed in the support structure from of a medium position on one side of said opening.

Similarly, the other head wall of the source comprises two fins that have two other cavities, opposite and aligned, which is assembled with a similar tongue of the support structure

The tray is then inserted from the wall in the background, in the opening that has formed in the structure of support and is assembled, through the cavities, with the fins that protrude into the opening.

However, the Applicant has verified that the cooking sources known in the current art can be Improved in various aspects.

First, the sources of the known technique They cannot always be lifted or transported effectively. In effect, the protrusion oriented towards the inside of the opening of the support structure tends to yield when subjected to a high shear, due, for example, to the content's own weight of the tray.

This inconvenience is more evident when the source, and consequently said bulge, is made of cardboard for food use, which, as you know, Offers reduced mechanical characteristics.

On the other hand, the contact surface between the fin of the support structure and the cavities of the tray is shaped, to a large extent, by the thickness of the fins on which said cavities have been formed. Since, in short, said thickness is the thickness of the side walls of which the fins are part and that said walls must be thin to allow the passage of heat and therefore, cooking, and to contain manufacturing costs of the source, the contact surface between the tongue of the support structure and the tray cavities is decidedly limited. This reduced thickness further exacerbates the aforementioned inconvenience.
do.

In addition, the sources of the current technique are not suitable for repeatedly putting and removing the trays from the support structure

Indeed, the tabs, being made in cantilever into the opening of the support structure and being poorly resistant to shearing, they are easily damaged and not They can be subjected to repeated shearing.

Finally, the precision of manufacturing the trays must be extremely accurate especially in what it does to the tabs and cavities, which must be perfectly aligned and located at the proper distance, with the risk of incurring unnecessary discarding and producing sources that do not They are perfectly housed.

In this context, the main technical task of the present invention is to propose a baking dish and a method for manufacturing it to avoid inconveniences noted above.

In particular, the objective of this invention is to propose a source and a procedure for its manufacturing that guarantees reliable assembly of the various components and allow the source to be raised and transported in safe mode.

Another objective of the present invention is that of propose a source and method of realization of it that allow to repeatedly put and take the source of the structure of support for.

Another objective of the present invention is still present a source and a manufacturing method thereof that demand short times and moderate production costs.

The technical task indicated and the objectives specified are achieved substantially with a source and with the method of realization of it comprising the features techniques set forth in one or more of the claims of the present document

Other features and advantages of this invention will arise mostly from the description presented by way for example, and therefore not limiting, in a way of preferred but not exclusive embodiment of a source and a manufacturing method thereof, as illustrated in the drawings Attachments, in which:

- Figure 1 shows the view of a fountain in perspective, in accordance with the present invention;

- Figure 2 shows a perspective view of a constituent element of the source of Figure 1;

- Figure 3 shows a die cut sheet of the which is obtained the element of figure 2.

With reference to the attached figures, the number 1 indicates the entire source according to a first aspect of the present invention.

The source 1 comprises at least one tray 2 to contain food products and a support structure 3 for one or more trays 2.

Conveniently, both tray 2 and Support structure 3 are made in paper or cardboard for use food

Tray 2, illustrated in Figure 1 and whose details appear in figure 2, comprises a bottom wall 4 and a plurality of side walls 5, 6, 7, 8, which extend perimeter, moving away from the back wall 4.

For clarity of explanation, it is done explicitly referring to an embodiment as illustrated in the accompanying drawings, in which tray 2 comprises Four side walls. However, it is possible to perform the source object of the present invention with any number, but always greater than or equal to 3, of side walls. The description will clearly and uniquely demonstrate the way in which the Tray 2 can be modified to make trays with a number undefined side walls.

In the preferred embodiment, the tray 2 comprises a first wall 5, a second wall 6, a third wall 7 and a fourth wall 8, all of them lateral. The first side wall 5 and the third side wall 7 meet facing and extending from the first sides opposite the wall background 4. Also the second 6 and the fourth side wall 8 are facing and extending like second sides opposite the wall background 4. The side walls, 5, 6, 7, 8, together with the bottom wall 4 therefore define the containment cavity of tray 2.

Tray 2 also comprises a plurality of edges 9, 10, 11, 12 defined by the intersections of the side walls 5, 6, 7, 8. In particular, each edge 9, 10, 11 and 12 is defined by the intersection of two side walls consecutive.

The support structure 3 comprises at least a passage opening 13 (and in general, a plurality of openings 13), which is delimited by consecutive edges 14, 15, 16, 17 and perimeter, and that are an integral part of the support structure 3.

Conveniently, the passage opening 13 defines a space to accommodate tray 2. In other words, the opening 13 has dimensions such that they allow tray 2 to be inserted on the part of the bottom wall 4 said tray 2 remaining subject, at least partially as clarified later in this description, for the support structure 3.

Conveniently, to stably join the tray 2 to the support structure 3, at least one of the edges 9, 10, 11, 12 of tray 2 comprise an angled cut acute 18 and the support structure 3 comprises at least one joint 19 that extends between two consecutive edges of the opening 13.

The junction between tray 2 and the structure of 3 support is done through the sharp angle cutting joint 18 with the board 19.

More in detail, the joint 19 extends between the end portions 14a, 15b of two consecutive edges 14, 15  and connect the two edges to each other. In other words, and how can be seen in the figure, the joint 19 defines a single free side oriented towards the inside of the opening, which maintains a convex geometry The sharp angle cut 18 on the edge 9, between the two consecutive side walls 5, 6 corresponding to the edges 14, 15 of the opening, retains the joint 19 thus joining tray 2 to the support structure 3.

With this objective, the sharp angle cut 18 comprises a first shoulder 20, defines a base surface for the board 19 for retention, serving as support for it latest.

In addition, the angle cut 18 comprises a second shoulder 21, and defines an upper surface for the joint 19 when joining and retains the latter in said angle cut 18.

To make the union between the support structure 3 and tray 2, each edge 10, 11, 12 of the tray 2 has a respective sharp angle cut 18 identical to which has been described above.

Also, coinciding with each end of two Consecutive edges 14a, 14b 15a, 15b, 16a, 16b, 17a, 17b of the opening 13, the support structure 3 comprises a joint 19 identical to the one described above. In other words, the cavities 13, which are intended to receive the trays, will be defined by eight rectilinear sides, four main sides 15, 16, 17, 18 opposed two by two and four together 19.

Thus, when tray 2 is found housed in the opening 13 of the support structure 3, the tray 2 is fixed to the support structure 3 in four points correspondingly opposite.

As stated, the fact that tray 2 is simply housed in opening 13, even without considering the contribution of acute angle cuts 18 and joints 19, allows partial retention of tray 2 by the support structure 3.

Indeed, tray 2 conveniently has a conical shape and, when inserted into the opening 13, it rests at the edges 14, 15, 16 17 with their side walls 5, 6, 7, 8. Of this way a support is generated between the side walls 5, 6, 7, 8 of tray 2 and the edges of the opening 13; said support contributes to retain tray 2 in the support structure 3.

In greater detail, each side wall 5, 6, 7, 8 it comprises a first side 5a, 6a, 7a, 8a attached to a corresponding side of the back wall 4 and a second side 5b, 6b, 7b, 8b, opposite to the first, oriented to an income section of the containment cavity that houses tray 2.

The first sides 5th, 6th, 7th, 8th of the walls laterals have smaller dimensions with respect to the second sides 5b, 6b, 7b, 8b, and thereby define the trapezoidal shape of the side walls 5, 6, 7, 8 and thereby shape desired conical trunk to tray 2.

Conveniently, two side walls 5, 7 Opposites each comprise two fins or appendages 22, 23. Each one of said fins or appendages 22, 23 are folded over a predetermined surface, the outer surface in the form of preferred embodiment, by a corresponding side wall 6.8 which it does not present the two appendices 22, 23. This reinforces the edges 9, 10, 11, 12 and consequently the cuts are reinforced in acute angle 18 that are formed therein.

In another embodiment that has not been illustrated, also the side walls 6, 8 have their corresponding one-piece appendix with fins 22 and 23, respectively. In this way, the tray has no openings passing through the side walls 5, 6, 7, 8, with the exception of mentioned cuts.

In particular, fins 22, 23 fold towards the respective adjacent side wall 6, 8 as seen in figure 2; however, instead of leaning on the same wall 6; 8 are in contact with the fins of the wall 6, 8, which in turn they lean directly to the wall mentioned above, defining a Multi-layer bellows structure. From the inside the tray to the outside the wall will be embedded lateral 8, its appendix, and consequently, fin 23.

In accordance with a second aspect of the present invention, a process for manufacturing the source is described previously described.

Tray 2 is obtained from a sheet flat die indicated with the number 24 in figure 3. Conveniently, the die cut sheet 24 is constituted by paper or cardboard for food use.

The die cut sheet 24 comprises a central panel 25 defining a bottom wall 4 of tray 2. Peripherally a plurality of side panels 26 are attached to the central panel 25, 27, 28, 29 defining the side walls 5, 6, 7, 8 of the tray 2. The connection between the side panels 26, 27, 28, 29 and the central panel 25 is achieved with a plurality of lines of weakening 30, 31, 32, 33, which serve as a guide for folding of the side panels with respect to the central panel 25.

At least one of the side panels 26, 27, 28, 29 comprises at least one fin 34, which, together with an adjacent side wall, it forms the edge 9. In particular, after folding the side panels 26, 27, 28, 29 and consequently, of forming the side walls 5, 6, 7, 8, fin 34 is folded in contact with a predetermined surface of a side wall 6, thereby defining one of the four edges 9, 10, 11, 12 of tray 2. In other words, the fin 34, once folded in its final position, constitutes one of the Appendices 22, 23 mentioned above.

To facilitate folding of fin 34, it joins the side panel through a fold line 35.

Conveniently, fin 34 presents so minus two parallel cuts 36 that extend between the panel lateral 5, already provided with fin 34, and fin 34 itself. Both parallel cuts 36 may define a folding portion 37 which, a once folded sheet 24 to form tray 2, constitutes a sharp angle cut 18.

In particular, the foldable portion 37 may be folded in the way of protruding into the tray 2. In in other words, the folding portion 37, in addition to constituting a sharp angle cut 18, forms a retaining wall for the same sharp angle cut 18.

Conveniently, to allow the wall to containment of the sharp angle cut 18 remain oriented towards the inside the tray 2, the side panel 6 on which it is folded fin 34 has a cut 38 corresponding to the position which must, at least partially, be occupied by the wall of containment.

In an alternative embodiment that is not illustrates, the cuts 36 are four, parallel two by two. In this case, no folding portion 37 is defined but simply a hole superimposed on fin 34 and side panel 5 in which Flap 34 is present. Said hole, once folded the blade die cut 24, forms a sharp angle cut 18.

Conveniently, to make a tray 2 with four side walls, side panels 26, 27, 28, 29 there are four, symmetrical two in two, with respect to the central panel 25.

In addition, the two opposite side panels 26, 28 of the four side panels 26, 27, 28, 29 comprise each one two fins 34 in peripheral and opposite positions with respect to to the side panel itself, so that they define and reinforce the four edges 9, 10, 11, 12 of tray 2.

Also in this case, each of the four fins 34 comprises at least two parallel cuts 36 for form the four acute angle cuts 18 corresponding to the edges 9, 10, 11, 12.

The support structure 3 is made by punching a card for food use to define the opening 13. Conveniently, the joints 19 between the edges of the opening 13 they are performed during the die-cutting operation that performs the opening 13. In effect, the joints 19 form an integral part of the support structure 3.

Obviously, the openings 13 made in the support structure 3 will be as many as the number of trays 2 with those that you want to provide to source 1.

Therefore, to get a tray 2 is enough to punch a first cardboard for food use to obtain a die cut sheet 24 and fold the die cut sheet 24 to along the fold lines 30, 31, 32, 33, 35.

At this point, to arm the fountain 1 you you need to insert tray 2 into the opening 13 of the structure of support 3 and exert a slight pressure on the tray 2 so that the sharp angled cuts 18 and the joints 19 are assembled. For remove tray 2 from the support structure 3, you need to exercise a pressure in the opposite direction to the pressure exerted to insert the tray 2 into the opening 13, so as to deform elastically the sharp angle cuts 18 and the joints 19, separating them.

The present invention achieves the objectives proposed.

Indeed, sharp angled cuts in the tray edges and joints between the edges of the opening of the support structure offer good mechanical resistance to deformation, allowing the source to be raised safely and transport it easily.

In addition, these characteristics allow to put and remove the tray from the support structure repeatedly without damaging the joints or cuts at an acute angle.

Finally, since no other ones are needed operations outside the die cut of the cardboard panels for food use of any thickness, the procedure of Source manufacturing requires short times and costs of Moderate production

Claims (13)

1. A source comprising: - at least one tray (2) to contain food products comprising:

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a bottom wall (4),

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a plurality of walls consecutive lateral (5, 6, 7, 8) that extend from the wall background (4) and define a containment cavity,

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a plurality of edges (9, 10, 11, 12) each of which is defined by two walls consecutive sides;

- a support structure (3) comprising: - at least one passage opening (13), delimited by a plurality of consecutive edges (14, 15, 16, 17), and defining a space to accommodate said tray (2) in said support structure
(3); with the following characteristics: - at least one of these edges (9, 10, 11, 12) of said tray (2) comprises a sharp angle cut (18), - said support structure (3) comprises minus one joint (19) between two consecutive edges (14, 15) of the opening (13), - said sharp angle cut (18) is used by said seal (19) to couple said tray (2) to said support structure (3). 2. A source according to claim 1 in the that said acute angle cut (18) comprises a first shoulder (20) that defines a base surface to support and fix the joint (19) between two consecutive edges of the opening (13) and a second shoulder (21) defining an upper surface to retain said gasket (19) in the sharp angle cut (18). 3. A source according to claim 1 or 2 wherein said joint (19) is an integral part of said structure of support (3) and extends between the end portions (14a, 15b) of two consecutive edges (14, 15) of the opening (13), joining them; said support structure (3) is flat. 4. A source according to any of the previous claims in which said support structure (3) and said tray (2) are mainly made of paper or cardboard preferably for food use. 5. A source according to any of the preceding claims in which each edge (9, 10, 11, 12) which is formed between the two consecutive side walls comprises a sharp angle cut (18); each sharp angle cut (18) it can be assembled with a respective joint (19) between the two edges of said opening (13). 6. A source according to any of the preceding claims wherein each side wall (5, 6, 7, 8) comprises a first side (5a, 6a, 7a, 8a) attached to the wall of bottom (4) and a second side (5b, 6b, 7b, 8b) opposite the first and oriented towards an entry section to the containment cavity of the tray (2); said side walls (5, 6, 7, 8) are trapezoidal and preferably have said second sides (5b, 6b, 7b, 8b) are larger in relation to the respective first sides (5th, 6th, 7th, 8th) to define a shape the shape conical tray trunk (2). 7. A source according to any of the preceding claims wherein said edges (14, 15, 16, 17) of the opening (13) in the support structure (3) are in contact with said side walls (5, 6, 7, 8) of the tray (2) due to the effect of the assembly between the joint (19) and the cut in acute angle (18). 8. A source according to any of the preceding claims wherein the side walls opposite (5, 7) of said side walls (5, 6, 7, 8) of the tray (2) comprise two fins (22, 23), and the other two walls opposite sides (6,8) also comprise, in turn, two one-piece appendages with said fins (23) and define a multilayer structure closed outwards in which said fins (23) are folded and in contact with the appendages, also folded in turn, and placed in parallel and in contact with said side wall (6; 8). 9. A source according to any of the preceding claims wherein said tray (2) is constituted by a single sheet of paper and that is obtained from of a flat die cut sheet (24). 10. A flat die cut sheet, preferably of paper or cardboard for food use to manufacture a tray for containing food products comprising: - a central panel (25) to define a wall bottom (4) of the tray (2), - a plurality of side panels (26, 27, 28, 29) preferably connected to the central panel (25) a through respective lines of weakening (30, 31, 32, 33) to define a plurality of side walls (5, 6, 7, 8) of the tray (2), - at least one (26) of said panels lateral (26, 27, 28, 29) comprise: - at least one fin (34) for defining, in combination with an adjacent side panel (27), an edge (9) of the tray (2); characterized by the fact that at least one side panel (26) comprising said fin (34) has: - at least two parallel cuts (36) that are extend between said side panel (26) and said fin (34) for defining a sharp angle cut (18) in said edge (9). 11. The die cut sheet according to claim 10 comprising a first pair of side panels (26, 28) and a second pair of side panels (27, 29) symmetrical with respect to the central panel (25); in turn, each side panel (26, 28) of said first pair respectively comprises two fins (34) and at least two parallel cuts (36) that extend between the side panel (26, 28) and the first of said two fins (34) and at least two parallel cuts (36) extending between said side panel (26, 28) and the second of said two fins (34) to define four sharp angle cuts (18) in as many edges (9, 10, 11, 12). 12. A die cut sheet according to claim 11 wherein each pair of said cuts (36) defines a folding portion (37) intended to protrude inwards of the tray (2) to define a reinforcing element of said sharp angle cuts (18), or, alternatively, in which said cuts (36) are defined by said side panel (26,28) and by the second of said fins (34) to define a hole in said walls. 13. Procedure for manufacturing said source characterized by understanding the phases of: - cut out a first card for use food to obtain a die cut sheet (24) according to the claim 12, - cut out a second card for use food to define at least one delimited opening (13) by a plurality of consecutive edges (14, 15, 16, 17) and a gasket (19) corresponding to each pair of consecutive edges, - folding said punched sheet (24) to the along the weakening lines (30, 31, 32, 33) to define a bottom wall (4) and four side walls (5, 6, 7, 8), - folding each fin (34) towards a previously defined surface of a corresponding side wall  (27, 29) of the second pair of side panels to define a tray (2) with four edges (9, 10, 11, 12), - inserting said tray (2) into said opening (13) forcing the insertion of the joints (19) in the corresponding sharp angle cuts (18).